I collect crop mark cards, so this group of three is like finding gold to me, but it is something I've never seen before. Actually a few things I've never seen. First these cards all have crop marks on the front too, big yellow lines in the same corner as the crop mark on the back. That isn't the only thing, it's the same player with the same back and crop marks in different corners. At some point, Nattress was in the top and bottom right corners and they put marks on the front too! Plus the top crops are those reverse marks I've only seen on one other card, a Polar Bear. I have 20 other crop mark cards, 18 different players, none have the front marks like these and I've never seen the same player/back with crops in different corners...so have others seen these things? Check your Nattress cards before I buy them all!
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Please check out my books on baseball history. They include the bio of star second baseman Dots Miller. A book featuring 20 Moonlight Graham players who got into just one game. Another with 13 players who were with the Pittsburgh Pirates during the regular season, but never played a game. There's also one about 27 baseball families, as well as a day-by-day look at the worst team in Pittsburgh Pirates history. All five can be found here:
https://www.amazon.com/stores/John-D...hor/B0DH87Q2DS